She told Closer magazine: "Meghan enjoyed this grace period of about six months following her wedding where it appeared she could do no wrong. But there have been whispers of dive-like behaviour for a while, and I think the reports about the Queen and the tiara row appeared to open the floodgates to more stories.

"These reports of tension are interesting, because while the Palace haven’t confirmed them, they also haven’t denied them. And I always say there’s no smoke without fire.

"I was told by insiders in the summer that Kate was making a big effort with Meghan and inviting her to her home in Kensington Palace for tea. But I think what happened was the two women realised they are very different people and can’t force a friendship."

The expert believes that despite making an effort, Kate and Meghan have realised that they have no common connection between them other than the fact that they both married a prince.

Read More

Meghan Markle’s great-great-great grandmother used to work in the kitchens at Windsor Castle

But they’ve also been pictured laughing and smiling together
(Image: PA)

She also says it’s understandable that "two strong personalities" such as Meghan and Kate would clash and have very different views and attitudes.

Expert Katie also believes people need to "cut Meghan some slack".

She says it couldn’t have been easy for the former actress to be introduced to the royal family so quickly and to have had the world watching her in the run up to her wedding thanks to the drama with her father, Thomas Markle.

Mirror Online has contacted the Palace for comment.

Do you have a story to sell? Get in touch with us at [email protected] or call us direct 0207 29 33033